As GOP criticism mounts, Trump campaign goes on defensive

Facing continued dissatisfaction within the GOP, Donald Trump and campaign manager Paul Manafort made public assurances on Wednesday, with Manafort asserting that the campaign is “moving forward in a positive way.” Meanwhile, Hewlett Packard CEO Meg Whitman became the highest-profile Republican to endorse Hillary Clinton. Gwen Ifill reviews the day’s events with Lisa Desjardins.